SP5OXJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: KO02

Receiver-side FT8 activity involving SP5OXJ, decoded by SO8OO in southeastern Poland. 165 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-20.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 165 FT8 messages attributed to SP5OXJ as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (50%), followed by 40 m (28%) and 80 m (22%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (67%); the estimated median was -1 dB.

Overview

165

Messages attributed

UTC dates decoded

Active 15-min windows

-1 dB

Estimated median S/N

Bands

160m · 82 80m · 36 40m · 46 20m · 1

First attributed message: 2026-06-06
Last attributed message: 2026-09-20 21:48 UTC

Observed FT8 message patterns

Attributed sample: 165 messages
Active dates: 8 UTC dates
Estimated median S/N: -1 dB
Estimated 10th-90th percentile: -17 to +10 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 19, moderate (-15 to -9 dB) 35, strong (≥ -8 dB) 111.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with SP5OXJ in decoded directed-looking exchanges:

E77PY · Bosnia-Herzegovina EI3EBB · Ireland F1PBZ · France JA5BZL · Japan LX1JX · Luxembourg MW7GQB · Wales R2DRE · European Russia RD7O · European Russia RI1FJZ · Franz Josef Land VR2ZXP · Hong Kong BH3RKB · China EA8UP · Canary Islands

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to SP5OXJ

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator: KO02 · 92 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 290 km (approx.)
Last such locator decoded: 2026-09-20 21:47 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Time UTC	Band	SP5OXJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 21:47	80m	-1 / -11	RA6OY	+1 / +3	8	✓ Full exchange observed
09-20 21:18	160m	-12 / -	HK3W	- / -	2	Partial capture
09-20 21:15	160m	-2 / -13	R2DRE	-11 / -1	6	✓ Full exchange observed
09-20 21:15	160m	-6 / -17	RD7O	-4 / -3	5	✓ Full exchange observed
09-20 20:54	160m	-12 / +4	SP9UPH	+9 / +6	5	Partial capture
09-20 20:53	160m	-14 / -	EI3EBB	- / -16	3	✓ Closing fragment
09-20 20:52	160m	-13 / -6	LX1JX	-3 / -4	7	✓ Full exchange observed
09-20 20:51	160m	-14 / -	JA5BZL	- / -7	2	✓ Closing fragment
09-20 20:44	160m	-9 / -	VR2ZXP	- / -25	6	✓ Closing fragment
09-20 20:43	160m	-14 / -	RI1FJZ	- / -5	2	✓ Closing fragment
09-20 20:41	80m	-4 / -	JA4FKX	- / -	2	Partial capture
09-03 21:53	40m	-14 / -	RI1FJL	- / -17	2	Partial capture
09-03 21:47	40m	-10 / -	S55P	- / -10	2	Partial capture
09-03 21:33	80m	+1 / -21	EA8UP	-3 / -14	5	✓ Full exchange observed
09-03 21:16	80m	-1 / -	RI1FJL	- / -18	2	Partial capture
08-30 22:19	80m	+10 / -	GJ6WRI	- / -	3	Partial capture
08-30 22:10	160m	-22 / -	RI1FJL	- / -	2	Partial capture
08-30 21:58	160m	-16 / -	RI1FJL	- / -19	12	Partial capture
08-30 21:54	160m	-17 / -17	E77PY	-14 / -14	6	✓ Full exchange observed
08-30 21:52	160m	+4 / +3	F1PBZ	-15 / -25	4	✓ Full exchange observed
08-30 21:46	80m	+9 / -17	G8OO	-3 / -	6	✓ Closing observed
08-30 21:46	80m	- / -14	SP2BT	-12 / -	4	✓ Closing fragment
08-30 21:45	80m	+4 / -	BH3RKB	-17 / -5	3	✓ Closing observed
08-30 21:44	80m	+8 / -6	9A0POTA	0 / -14	3	Partial capture
08-30 21:42	80m	+3 / -	BH3RKB	- / -	3	Partial capture
08-30 21:39	80m	-9 / -	BH3RKB	- / -	2	Partial capture
08-30 21:37	80m	-9 / +4	MW3FLI	-14 / -	3	✓ Closing observed
08-28 19:37	160m	-8 / -	MW7GQB	- / -10	2	✓ Closing fragment
08-28 19:33	80m	0 / -5	SP8WB	+16 / +8	6	✓ Full exchange observed
08-28 19:31	80m	-2 / -	SP2POL	-9 / -9	4	✓ Closing observed
08-28 19:29	80m	-14 / -	OH7FES	- / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

80m

UTC    dB Audio  Message
213415  -1 1647  EA8UP SP5OXJ R-14
213430  -1 2564  SP5OXJ EA8UP RR73
213445  +2 1647  EA8UP SP5OXJ 73
204130  -1 1956  JA4FKX SP5OXJ KO02 (x2)
205845  -1 1903  II4PAGE SP5OXJ KO02
214715  +2 1862  CQ SP5OXJ KO02
214730  +2  215  SP5OXJ RA6OY KN88
214745  +1 1862  RA6OY SP5OXJ +03
214800  +1  215  SP5OXJ RA6OY KN88
214815  -1 1862  RA6OY SP5OXJ +07
214830  +1  215  SP5OXJ RA6OY KN88
214845  -2 1862  RA6OY SP5OXJ +07
214900  -1  215  SP5OXJ RA6OY R-11 (x2)

160m

UTC    dB Audio  Message
211530  +0 1352  SP5OXJ RD7O KN98
211530 -15 1986  SP5OXJ R2DRE -13
211545  -6 1365  RD7O SP5OXJ -03
211600  -3 1352  SP5OXJ RD7O R-17
211600  -6 1886  SP5OXJ R2DRE -13
211615  -7 1365  RD7O SP5OXJ RR73
211630 -10 1352  SP5OXJ RD7O 73
211630 -12 1886  SP5OXJ R2DRE -13
211645  +0 1365  R2DRE SP5OXJ R-01
211700 -12 1886  SP5OXJ R2DRE RR73
211715  -3 1365  R2DRE SP5OXJ 73
211800 -11 1192  HK3W SP5OXJ KO02 (x2)
214430  -3 1250  CQ SP5OXJ KO02                        a1 (x2)

40m

UTC    dB Audio  Message
214730 -11 1683  S55P SP5OXJ R-10 (x2)
215315 -13 1683  RI1FJL SP5OXJ KO02 (x2)

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

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